public LambdaRankWorker(
int maxIter,
int featureSize,
int windowSize,
double initStep,
double shrinkage,
double lambda,
OptimizationType otype) {
m_weight = new double[featureSize];
m_g = new double[featureSize];
m_queries = new ArrayList<_Query>();
m_step = initStep;
m_maxIter = maxIter;
m_windowSize = windowSize;
m_shrinkage = shrinkage;
m_lambda = lambda;
if (otype.equals(OptimizationType.OT_MAP)) m_eval = new MAP_Evaluator();
else if (otype.equals(OptimizationType.OT_NDCG)) m_eval = new NDCG_Evaluator(LambdaRank.NDCG_K);
else m_eval = new Evaluator();
m_eval.setRate(0.5);
}
